The researchers found that river sediment delivery to many deltas is expected to decrease over this century under most of the investigated scenarios.
The consequences of reductions in fluvial sediment delivery to deltas provide a clear rational for reducing these impacts.
The high sediment yield area in the HLR is 71,600 [km.sup.2] and accounts for 60.1% of the total high sediment yield area in the entire Yellow River Basin; additionally, the high sediment yield area in the HLR accounts for 64.2% of the study area.
The precipitation data of 292 rainfall stations and the sediment discharge data are from the hydrological yearbook and the Hydrological Bureau of Yellow River Conservancy Commission; additionally, data from 9 meteorological stations were provided by China Meteorological Administration (CMA).
Quantitative estimations of the populations of total aerobic heterotrophs and fungi in the sediment samples were determined by direct plating on appropriate media [40, 41].
Biolog EcoPlate[TM] (Biolog, Inc., Hayward, CA) was used to determine the "metabolic fingerprint" of heterotrophic microorganisms present in the sediment samples based on the carbon source they utilized.
Xia, "Selected trace metals (As, Cd and Hg) distribution and contamination in the coastal wetland sediment
of the northern Beibu Gulf, South China Sea," Marine Pollution Bulletin, vol.
"Despite that, the typical formulas and relationships that are used to describe sediment
flux in most other rivers don't work for the Huanghe," Nittrouer said.
Hydrological data of annual runoff and suspended sediment
load of Huangjiagang, Xiangyang, Huangzhuang, and Xiantao stations along mainstream of the Han River were collected from the Changjiang Water Resources Commission, China (CWRC) [15,16].
In addition, sediment
samples need to be coated with a carbon film first and then deposited in the sample chamber to enhance conductivity.
Because of the high flow caused by precipitation, the stream sediment
characteristics changed dramatically during the study, with a decrease in the E.
Results of Scenario-1 indicates that power units can safely operate for 21 days without any stoppage to flush sedimentation in the sand trap when the diversion flow carries sediment
concentration of 0.1 kg/m3 but the power units have to shutdown in order to flush out the sedimentation from the sand trap chamber just after 3 days in case when the diversion flow carries sediment
concentration of 1.0 kg/m3.